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Triumph TR6 - Tuned Fuel Economy
|As a general indication of engine tune, I'd like to poll members owning a STOCK O/D TR-6 as to their fuel economy. Yesterday I completed a 172 mile run in my stock TR-6, 140 miles of which were clocked at 65 to 70 mph with O/D over rolling western PA terrain and the rest around town without O/D. The hood was up. The average economy was 27.5 mpg. Thanks.|
That sounds like good mileage. I will let you know what I get..I am stock with O/D.
|Rick O; That sounds like really great mileage to me. I just did about a 150 mile run and averaged about 25 mpg on my 72.|
|'72 w/od and stock I average 24-26 mpg. in a mix of highway and suburban cruising, with a more suburban mix it goes as low as 20-22. I don't have #'s for straight highway but as soon as I do I will post. Your's sound good though.|
|Thanks for the info Rick C., Joel, and KBD. I hope others post too since I think the results should help others determine there general state of tune.|
After posting the question, I realized that my six is slightly modified with (1) K&N air filters, (2) Ansa exhaust, and (3) ducted 'ram' air from the rad shroud to a twin-snout air filter housing. I don't know if those minor changes add up to much mpg-wise.
|OK I confess...K&Ns also.. I remember u talking about your "Dodge" conversion a while back. I also remember reading something along the line that u have to be careful that you are not ramming to much air at the carbs (at high speed). The Ansa system I think might only lead to a heavier foot on acceleration for the sake of the sweet sound. I presume your twin snout is the original housing and u are probably getting more air to the back carb now. Just retorqed head and will do the Clikajust today. Sounds like rain till next Tuesday....bummer.|
Noticed you are main pic page 2 of the TR REGISTRY- TR6. Very nice lookin Rick.
How come more of you TR lovers have not posted/registerd your babies??? 3 other fine examples...William P, KBD, and R&E Warren.
P.S. Rick we both forgot to mention Pertronix above...OOPS!
|I forgot to mention petronix, and also K&N filters no fancy ram air though just pancake covers. Stock from there back, I remember seeing pictures of that type of installation somewhere was it ever stock?|
60 degrees and rain.
|Wow, didn't think this thread would turn into confessions for everyone! UR right, I also forgot the Pertronix I on my six.|
Rick C. -Thanks for the compliment; everyone should get theirs on the FREE TRRegistry as well. Also, when you due your lash cliking, let me know if your #6 intake valve has the same amount of motion as the others when you push your six in gear.
KBD--The twin snout setup apparently was used early on (69 only?) and included a special hose attachment plate that was presumably cut in to the rad shroud. I remember seeing pics of this somewhere (not Bentley). Current collective wisdom is that this setup was tossed out on emissions issues (cool air results in more emissions due to a denser charge) and, of course, to save $$$.
|Rick O, Just completed 175 miles mostly suburban maybe 30 miles straight highway at 25 mpg. End of confessional|
|Gee whizz guys. My 72 seems to be the most stock of any of these and gets the worst mileage. Maybe because I don't have OD. I thought 25 on the highway was pretty good. Oh well, back to the drawing board.|
I will gladly let u know the answer to: "let me know if your #6 intake valve has the same amount of motion as the others when you push your six in gear" but I must confess......HUH????
Now we are all allowed to take communion.
|Rick C. I was in a hurry with the description, sorry. All the rockers, when properly lashed, should have the same amount of up and down motion, right? When I adjusted my valves, I noticed that the range of motion for the #6 intake valve was much less than the other intakes as I pushed the car back and forth. First I thought the pushrod was bent, but I removed it and replaced it with a used one. I was just wondering if the limited motion was right (I don't think so). The car runs fine, it just bugs me.|
|Joel, For a great story and a great testament of TR6 fuel economy go to:|
http://www.vtr.org/people/streeter/lbc/stories/vtr-97/there-and-back.html over 4600 miles of mixed travel in a '71 at 27 mpg.
I think anything in the 20's, high or low, depending on travel is pretty damn good.
|Apologies it is a '70 with O/D.|
|Rick-On long trips,cruising at 2800-3000 rpm in OD,30 mpg is possible. The stock needles are pretty lean in this area, and the plugs show very light tan. Town driving is around 20mpg.|
This thread was discussed between 15/05/2002 and 18/05/2002
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